All at once we were madly, clumsily, shamelessly, agonizingly in love with each other; hopelessly, I should add, because that frenzy of mutual possession might have been assuaged only by our actually imbibing and assimilating every particle of each other's soul and flesh; but there we were, unable even to mate as slum children would have so easily found an opportunity to do so.
Vladimir NabokovTo a greater or lesser extent there goes on in every person a struggle between two forces: the longing for privacy and the urge to go places: the introversion, interest directed within oneself toward one's own inner life of vigorous thought and fancy; and extroversion, interest directed outward, toward the external world of people and tangible values.
Vladimir Nabokov